Chemistry, 23.07.2019 10:30 leilaford2003
Sandra heated a 12.3-g piece of iron to 100oc. she then placed the iron in a calorimeter with a heat capacity of 10.4 j/oc. the reading on the calorimeter temperature gauge rose from 25oc to 30oc. how much heat did the piece of iron lose? a: 2.08 jb: 52.0 jc: 61.5 jd: 861 j
Answers: 1
Chemistry, 22.06.2019 06:00
How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025
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Chemistry, 22.06.2019 07:00
Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 1
Chemistry, 22.06.2019 22:00
4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.
Answers: 2
Sandra heated a 12.3-g piece of iron to 100oc. she then placed the iron in a calorimeter with a heat...
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